You may choose to enable the displaying of NCL commands in
    order to see what NCL commands are being issued on your behalf
    by the GUI.  Do so by pulling down the Options menu, selecting
    the Default Actions menu item, and enabling Display NCL Commands
    in the dialog box.  The NCL commands will appear in the window
    from which you started the GUI.  Viewing these commands will
    help familiarize you with NCL syntax.